TY - JOUR
T1 - Super Chirality Promotion of Helical Poly(Phenyl Isocyanide)s by Grafting onto Ethyl Cellulose
AU - Shen, Xiaofei
AU - Huang, Hailong
AU - Qian, Hao
AU - Tang, Longxiang
AU - Zhang, Yan
AU - Xu, Min
AU - Wang, Huiqing
AU - Wang, Zhongkai
N1 - Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2021/8
Y1 - 2021/8
N2 - Chiral property of cellulose can be transferred to final materials, here artificial helical polymer, right-handed helical poly(phenyl isocyanide) (PPI) is grafted onto ethyl cellulose (EC) with expecting to enhance the chiral effect of PPI. EC-2,3-g-PPIn copolymers are prepared via “click” chemistry of copper-catalyzed alkyne-azide cycloaddition, and confirmed by high-resolution 1H and 13C NMR, Fourier transform infrared spectroscopy (FTIR), and gel permeation chromatography (GPC). The resulting EC-2,3-g-PPIn copolymer takes a right-handed helical structure with super circular dichroism intensity which is 302% higher than that of PPI, which indicates that EC backbone promotes the right-handed chirality of PPIn. Furthermore, EC-2,3-g-PPIn exhibits good chiral recognition ability of the D/L-Ala-DNSP fluorescent probe, and induces a uniquely visible blue shift for L-Ala-DNSP. Therefore, a novel facile strategy is provided to highly improve chiral property and chiral recognition ability of artificial helical polymers by grafting onto EC.
AB - Chiral property of cellulose can be transferred to final materials, here artificial helical polymer, right-handed helical poly(phenyl isocyanide) (PPI) is grafted onto ethyl cellulose (EC) with expecting to enhance the chiral effect of PPI. EC-2,3-g-PPIn copolymers are prepared via “click” chemistry of copper-catalyzed alkyne-azide cycloaddition, and confirmed by high-resolution 1H and 13C NMR, Fourier transform infrared spectroscopy (FTIR), and gel permeation chromatography (GPC). The resulting EC-2,3-g-PPIn copolymer takes a right-handed helical structure with super circular dichroism intensity which is 302% higher than that of PPI, which indicates that EC backbone promotes the right-handed chirality of PPIn. Furthermore, EC-2,3-g-PPIn exhibits good chiral recognition ability of the D/L-Ala-DNSP fluorescent probe, and induces a uniquely visible blue shift for L-Ala-DNSP. Therefore, a novel facile strategy is provided to highly improve chiral property and chiral recognition ability of artificial helical polymers by grafting onto EC.
KW - chiral recognition
KW - click chemistry
KW - ethyl cellulose
KW - poly(phenyl isocyanide)
UR - https://www.scopus.com/pages/publications/85108843860
U2 - 10.1002/macp.202100103
DO - 10.1002/macp.202100103
M3 - 文章
AN - SCOPUS:85108843860
SN - 1022-1352
VL - 222
JO - Macromolecular Chemistry and Physics
JF - Macromolecular Chemistry and Physics
IS - 15
M1 - 2100103
ER -